Quasi-phase-matching-division multiplexing holography in a three-dimensional nonlinear photonic crystal

Quasi-phase-matching-division multiplexing holography in a three-dimensional nonlinear photonic crystal

Blog Article

Abstract Nonlinear holography has recently emerged as a novel tool to reconstruct the encoded information at a new wavelength, which has important applications in optical display and optical encryption.However, this scheme still struggles with low conversion efficiency and ineffective multiplexing.In this work, we demonstrate a quasi-phase-matching (QPM) -division multiplexing holography in a three-dimensional (3D) 1969 corvette seat covers nonlinear photonic crystal (NPC).3D NPC works as a nonlinear hologram, in which multiple images are distributed into different Ewald spheres in reciprocal space.The reciprocal vectors locating in a given Ewald sphere are capable of fulfilling the complete jetstream ice therapy parts QPM conditions for the high-efficiency reconstruction of the target image at the second-harmonic (SH) wave.

One can easily switch the reconstructed SH images by changing the QPM condition.The multiplexing capacity is scalable with the period number of 3D NPC.Our work provides a promising strategy to achieve highly efficient nonlinear multiplexing holography for high-security and high-density storage of optical information.